License of Python

roee shlomo roee88 at
Mon Mar 31 22:56:31 CEST 2008

On 30/03/2008, iu2 <israelu at> wrote:
> The problem is that including Python's license in the binary, which as
> I understand is a must do

I think you only need to include the PSF license if you modify python


>  There is no GPL-like "copyleft" restriction. Distributing binary-only
> versions of Python, modified or not, is allowed. There is no requirement to
> release any of your source code. You can also write extension modules for
> Python and provide them only in binary form.
> You cannot remove the PSF's copyright notice from either the source code
> or the resulting binary.
It sounds like you cannot *remove* the copyright notice from files that
already include it (like the Python source code and binaries. Not
applications written in Python).

>From the license itself:

> 2. Subject to the terms and conditions of this License Agreement, PSF
> hereby grants Licensee a nonexclusive, royalty-free, world-wide
> license to reproduce, analyze, test, perform and/or display publicly,
> prepare derivative works, distribute, and otherwise use Python 2.4
> alone or in any derivative version, provided, however, that PSF's
> License Agreement and PSF's notice of copyright, i.e., "Copyright (c)
> 2001, 2002, 2003, 2004 Python Software Foundation; All Rights Reserved"
> are retained in Python 2.4 alone or in any derivative version prepared
> by Licensee.

Correct me if I'm wrong.
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